In a recent update from Capcom news, its confirmed that the PC version of Resident Evil 6 will be available from Friday March 22, 2013. The good news is that retail version will also be supplemented by a digital version via Steam.

Both versions will be getting all the original content from the console release plus receive "any additions contained in any free title updates such as Ada Wong’s campaign being accessible from the outset and the challenging No Hope difficulty mode"

The game is also set to take advantage of Steam's functionality with support for the following features:

Cloud saving

Steam Achievements

Friends support

Game overlay

Leader boards

In addition to the announcement on the digital version, the minimum and recommended specifications have also been released for the game: